The changes were intended to raise money for the Treasury and help first-time buyers get on the housing ladder. But, without access to truly affordable housing, most young people still face the prospect of renting for several years until they can buy a home.

Data from Propcision has pin-pointed the houses that are proving most difficult to sell; some have been reduced in price by as much as 46 per cent.

Michelle Ricci, co-founder of Propcision, said some of these properties had ambitious pricing to begin with. In addition, her research showed that since June, the price cuts became more concentrated in central London and other affected areas, as the Brexit vote compounded pre-existing problems in the market.

Ennismore Gardens, Knightsbridge

This eight bedroom terrace house in Knightsbridge was first on sale for £22m, but is now advertised for £14.5m - a 34 per cent haircut.

The Grade II listed house has six floors (Source: Rightmove)

Palace Court, W2

This two bedroom flat has had its price slashed by 36 per cent since it was first on the market, coming down from £2.5m to £1.6m.

The flat is adjacent to Kensington Gardens (Source: Rightmove)

Devonshire Place Mews, Marylebone, W1G

This mews house first came on the market for £4.5m, but has since had a 36 per cent haircut and now has an asking price of £2.9m.

The three bedroom house is near Marylebone High Street and Baker Street (Source: Rightmove)

Cadogan Gardens, Sloane Square

The vendor for this one bed bachelor pad in Chelsea was originally trying to fetch £2.2m, but has reduced the price by 32 per cent to £1.5m.

The plush flat, set in a red brick period building, has a porter (Source: Rightmove)

Chelsea Island, Harbour Avenue

This penthouse in south west London is served by two elevators and has a private terrace. But, it hasn't managed to sell at its original asking price of close to £12m, and is now on for £6.5m, a cut of 46 per cent.

The penthouse offers views across the Thames (Source: Rightmove)

Soho Square, Soho

This new build penthouse in the centre of London has been hit by a price reduction of 34 per cent, down from £5.95m to £3.95m.

The three bed apartment is finished with walnut wardrobes and oak flooring (Source: Rightmove)

Kensington Park Gardens

This classic Notting Hill property - which comes with access to Ladbroke Square's communal gardens - has been reduced by 40 per cent. Its original asking price was £2.5m, and now it's advertised for £1.5m.

The two-bedroom flat is on a prestigious west London road (Source: Rightmove)

Bedford Avenue

This mansion apartment - with three double bedrooms - in Bloomsbury is now on the market for £2m, but has had its price slashed from £3.5m, a 43 per cent cut.

The flat comes with a porter and a video entry system (Source: Rightmove)

Bennet House, 54 St. James's Street

Just down from Fortnum & Mason, The Wolsey and the Ritz, this redeveloped flat could not be in a more prized location. But, the three bedroom apartment couldn't sell for £8m, and has now been reduced by 34 per cent to £5.3m.

This show flat's interior was designed by Kelly Hoppen (Source: Rightmove)